I have a 02 Trailblazer. The other day I was having starting issues. Really slow crank. New battery, alternator and the starter checked out good. Replace the negative battery cable and cleaned the positive connections. Vehicle started right up. Let up run for 10 minutes. Took it for a test run and right out of my driveway I rolled up the window and it stalled. Started it again ran for a second and stalled. Started it again died right away. Tried to start it agian and it just cranks with no start. Also dont know if this is related but there is a weird noise in the dash when I turn the key to start position. It has no codes.